Originally Posted by ependydad
I read this often- how much propane does the water heater really use? We've ran ours on both and haven't seen any kind of noticeable usage until we start to fire up the furnace and then we use it like (insert witty analogy here).
Let's put it this way:
- I picked up the TT in April,
- Ran WH on propane only for any trip between April and August, when I got the WH electric switch fixed.
- Ran the fridge on propane for all stocking and travel, only switched to elect when at the site
- Used the Sidekick about 2x a day, Stove about 1x a day for cooking meals.
- Finally ran through my first 20lb tank near the end of September, after turning the furnace on.
Note, that usage pattern was over ~20 nights camping. All in all, I'd have to say the suburban is not propane crazy.
Still, it would be nice to see a tanked/tankless hybrid, where the tank is heated by electric and supplemented by a propane ondemand approach like the tankless. This should be doable. Since a tankless works on a delta approach, if the water's already hot the tankless won't need to kick on and heat the water further, but if it's not, (like if without electric) then it could do the job. Just a matter of turning off the propane side of a suburban and then putting the tankless system downstream from there.